Magnonic Analog of Black- and White-Hole Horizons in Superfluid ^{3}He-B.

  title={Magnonic Analog of Black- and White-Hole Horizons in Superfluid ^\{3\}He-B.},
  author={M. {\vC}love{\vc}ko and Emil Ga{\vz}o and Martin Kupka and P. Skyba},
  journal={Physical review letters},
  volume={123 16},
We report on the theoretical model and experimental results of the experiment made in a limit of absolute zero temperature (∼600  μK) studying the spin wave analog of black- and white-hole horizons using spin (magnonic) superfluidity in superfluid ^{3}He-B. As an experimental tool simulating the properties of the black- and white-hole horizons, we used the spin-precession waves propagating on the background of the spin supercurrents between two Bose-Einstein condensates of magnons in the form… 

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